Has been a while since your post but if you are still wondering we just came across I80 to Rock Springs then north on 191 into Jackson. Constant climbing and gulping gas but the road was good with no problems. The Tetons were worth the trip.
From Jackson, WY to Victor, ID does have a terrible climb. This isn't on your route but if you are driving the area park the camper first.
Enjoy the views.
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WilsonsOntheGo
2015 F350
2016 Flagstaff Classic Superlite 5er
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